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Strange Behavior With Larger Torrents


NeoPhoenix

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Hello, I was wondering if maybe anyone has encountered this problem before and has some advice to help me out.

Basically what is happening is my utorrent runs perfectly fine with "regular" sized torrents. File sizes from a few GB in size and below. But when I download a torrent with a large file size, say 30 GB and higher, I get some very odd behavior. I'll watch the speed graph and what happens is my down speed and up speed are constant for around 10 seconds and after that the speed spikes and completely drops off, then it will come back up to the usual speed and 10 seconds later it spikes again. Looking at the speed graph it looks almost like a perfect sine wave after about 10 minutes. Once I stop the torrent in question, everything runs like it should.

I am on Vista Home Premium 64bit SP2. I've run the tcp/ip patch to raise my max half open connections to 100. I have uninstalled antivirus software, turned off windows firewall, and set my speed options to the recommended level for my connection, and the problem still occurs. I never had this problem before when using XP. I'd be grateful for any help anyone could give me.

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I used the connection setup guide on this website. I also tried some of the things suggested in the stickies in this forum. Still getting the same behavior. I forgot to mention in the first post that I am not using a router. I am connected straight to the modem.

As for how long it lasts, if I leave the torrent running, it does this indefinitely. Along with the yo yo behavior in utorrent itself, it also is affecting my entire connection. Websites get stuck on connecting to a website, it disconnects me from irc, etc.. It doesn't seem to matter whether I am running 50 torrents at the same time as the problem torrent or none at all either. As soon as I stop the large torrent, everything goes back to normal.

I did a little experiment to see if maybe it had something to do with the amount of files in a torrent, so I tried a torrent with 3k files, and I downloaded a torrent of the same size that consisted of only 2 files. The same problem occurred with each of them.

Thank you for your time, I hope I can get this fixed as it is rather annoying. This never happened until I got a new computer with Vista on it. Utorrent has worked completely fine on my xp machine for years lol.

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My advanced settings are all at the default settings at the moment. I changed them according to the stickies to see if it would help. When it didn't, I reverted all the changed settings back to default.

Why did I change the halfopen limit? It was a possible solution someone suggested to me in an irc channel that is more knowledgeable than I am about this kind of thing. I also saw it as a possible fix while googling for a solution to my problem.

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Sorry, I haven't responded, had to work all weekend.

@Switeck, yeah it looks pretty similar to those graphs. I'm not really seeing any peers get stuck. The torrents in question are seeded by 10 or so people on seedboxes and about 40 peers part seeding files in the torrent. I'll have my task manager open to look at network utilization and what happens is about every 10 seconds, network utilization spikes up to 100% and back down, things work normally again for about 10 seconds, it'll spike to 100% again, and it repeats that cycle until I stop the torrent. I don't think my ISP is throttling me, because as I said before, I never had this trouble on my xp machine. It only started up when I got a new computer with vista. That and the fact that other, smaller sized torrents on the same tracker download/upload just fine without this noted behavior has me baffled. Anyways, here's the information that the sticky asked for. Maybe it will help.

net.max_halfopen is set to 4

bt.connect_speed is set to 10

IP resolving is disabled in peer tab

UPnP and NAT-PMP are disabled

DHT disabled

peer.resolve_country is disabled

bt.transp_disposition is set to 5

tcpip was patched to 100 max half open connections

Color of network status light is green

Port checker from speed guide says: Port ***** is open and accepting connections.

Settings:

Upload Limit: 40 kB/s

Upload Slots: 4

Connections (Global): 100

Connections (Torrent): 40

Max Active Torrents: 4

Max Active Downloads: 2

OS: Vista Home Premium SP2 64bit

No security software installed at the moment

Modem: Motorola SB5101 SURFboard Cable Modem

Router: Not using one

Connection: Cable

Speeds from Speed Test: Download 3439 Kb/s Upload 935 Kb/s Latency 24 ms

ISP: Charter

Hijackthis Log:

Logfile of Trend Micro HijackThis v2.0.2

Scan saved at 10:40:59 PM, on 9/21/2009

Platform: Windows Vista SP2 (WinNT 6.00.1906)

MSIE: Internet Explorer v8.00 (8.00.6001.18813)

Boot mode: Normal

Running processes:

C:\Program Files (x86)\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe

C:\Program Files (x86)\Java\jre6\bin\jusched.exe

C:\Program Files (x86)\Mozilla Firefox\firefox.exe

C:\Program Files (x86)\Trend Micro\HijackThis\HijackThis.exe

C:\Users\Administrator\Desktop\procexp.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft.com/fwlink/?LinkId=69157

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.yahoo.com/

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://us.rd.yahoo.com/customize/ie/defaults/su/msgr9/*http://www.yahoo.com

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = http://us.rd.yahoo.com/customize/ie/defaults/sb/msgr9/*http://www.yahoo.com/ext/search/search.html

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://us.rd.yahoo.com/customize/ie/defaults/sp/msgr9/*http://www.yahoo.com

R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.yahoo.com/

R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =

R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =

R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page = C:\Windows\SysWOW64\blank.htm

R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =

F2 - REG:system.ini: UserInit=userinit.exe

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O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (no file)

O2 - BHO: Windows Live Sign-in Helper - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files (x86)\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll

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O2 - BHO: Google Dictionary Compression sdch - {C84D72FE-E17D-4195-BB24-76C02E2E7C4E} - C:\Program Files (x86)\Google\Google Toolbar\Component\fastsearch_B7C5AC242193BB3E.dll

O2 - BHO: Java Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files (x86)\Java\jre6\bin\jp2ssv.dll

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O4 - HKLM\..\Run: [sunJavaUpdateSched] "C:\Program Files (x86)\Java\jre6\bin\jusched.exe"

O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\Reader_sl.exe"

O4 - HKCU\..\Run: [sidebar] C:\Program Files\Windows Sidebar\sidebar.exe /autoRun

O4 - HKCU\..\Run: [swg] "C:\Program Files (x86)\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe"

O4 - HKCU\..\Run: [ehTray.exe] C:\Windows\ehome\ehTray.exe

O4 - HKCU\..\Run: [search Protection] C:\Program Files (x86)\Yahoo!\Search Protection\SearchProtection.exe

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O13 - Gopher Prefix:

O16 - DPF: {1E54D648-B804-468d-BC78-4AFFED8E262E} (System Requirements Lab) - http://www.systemrequirementslab.com/srl_bin/sysreqlab_srl.cab

O16 - DPF: {E2883E8F-472F-4FB0-9522-AC9BF37916A7} - http://platformdl.adobe.com/NOS/getPlusPlus/1.6/gp.cab

O23 - Service: @%SystemRoot%\system32\Alg.exe,-112 (ALG) - Unknown owner - C:\Windows\System32\alg.exe (file missing)

O23 - Service: ASP.NET State Service (aspnet_state) - Unknown owner - C:\Windows\Microsoft.NET\Framework\v2.0.50727\aspnet_state.exe (file missing)

O23 - Service: @dfsrres.dll,-101 (DFSR) - Unknown owner - C:\Windows\system32\DFSR.exe (file missing)

O23 - Service: Google Software Updater (gusvc) - Google - C:\Program Files (x86)\Google\Common\Google Updater\GoogleUpdaterService.exe

O23 - Service: @keyiso.dll,-100 (KeyIso) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)

O23 - Service: @comres.dll,-2797 (MSDTC) - Unknown owner - C:\Windows\System32\msdtc.exe (file missing)

O23 - Service: @%SystemRoot%\System32\netlogon.dll,-102 (Netlogon) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)

O23 - Service: NVIDIA Display Driver Service (nvsvc) - Unknown owner - C:\Windows\system32\nvvsvc.exe (file missing)

O23 - Service: PD91Agent - Raxco Software, Inc. - C:\Program Files\Raxco\PerfectDisk2008\PD91Agent.exe

O23 - Service: PD91Engine - Raxco Software, Inc. - C:\Program Files\Raxco\PerfectDisk2008\PD91Engine.exe

O23 - Service: PnkBstrA - Unknown owner - C:\Windows\system32\PnkBstrA.exe

O23 - Service: @%systemroot%\system32\psbase.dll,-300 (ProtectedStorage) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)

O23 - Service: @%systemroot%\system32\Locator.exe,-2 (RpcLocator) - Unknown owner - C:\Windows\system32\locator.exe (file missing)

O23 - Service: @%SystemRoot%\system32\samsrv.dll,-1 (SamSs) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)

O23 - Service: @%SystemRoot%\system32\SLsvc.exe,-101 (slsvc) - Unknown owner - C:\Windows\system32\SLsvc.exe (file missing)

O23 - Service: @%SystemRoot%\system32\snmptrap.exe,-3 (SNMPTRAP) - Unknown owner - C:\Windows\System32\snmptrap.exe (file missing)

O23 - Service: @%systemroot%\system32\spoolsv.exe,-1 (Spooler) - Unknown owner - C:\Windows\System32\spoolsv.exe (file missing)

O23 - Service: NVIDIA Stereoscopic 3D Driver Service (Stereo Service) - NVIDIA Corporation - C:\Program Files (x86)\NVIDIA Corporation\3D Vision\nvSCPAPISvr.exe

O23 - Service: @%SystemRoot%\system32\ui0detect.exe,-101 (UI0Detect) - Unknown owner - C:\Windows\system32\UI0Detect.exe (file missing)

O23 - Service: @%SystemRoot%\system32\vds.exe,-100 (vds) - Unknown owner - C:\Windows\System32\vds.exe (file missing)

O23 - Service: @%systemroot%\system32\vssvc.exe,-102 (VSS) - Unknown owner - C:\Windows\system32\vssvc.exe (file missing)

O23 - Service: @%Systemroot%\system32\wbem\wmiapsrv.exe,-110 (wmiApSrv) - Unknown owner - C:\Windows\system32\wbem\WmiApSrv.exe (file missing)

O23 - Service: @%ProgramFiles%\Windows Media Player\wmpnetwk.exe,-101 (WMPNetworkSvc) - Unknown owner - C:\Program Files (x86)\Windows Media Player\wmpnetwk.exe (file missing)

Process Explorer:

Process PID CPU Description Company Name

System Idle Process 0 97.68

Interrupts n/a 0.39 Hardware Interrupts

DPCs n/a 0.39 Deferred Procedure Calls

System 4 0.39

smss.exe 448 Windows Session Manager Microsoft Corporation

csrss.exe 524 Client Server Runtime Process Microsoft Corporation

wininit.exe 580 Windows Start-Up Application Microsoft Corporation

services.exe 636 Services and Controller app Microsoft Corporation

svchost.exe 808 Host Process for Windows Services Microsoft Corporation

mobsync.exe 2888 Microsoft Sync Center Microsoft Corporation

ehmsas.exe 2052 Media Center Media Status Aggregator Service Microsoft Corporation

nvvsvc.exe 852 NVIDIA Driver Helper Service, Version 190.62 NVIDIA Corporation

nvvsvc.exe 1608 NVIDIA Driver Helper Service, Version 190.62 NVIDIA Corporation

svchost.exe 880 Host Process for Windows Services Microsoft Corporation

svchost.exe 916 Host Process for Windows Services Microsoft Corporation

svchost.exe 964 Host Process for Windows Services Microsoft Corporation

audiodg.exe 484 Windows Audio Device Graph Isolation Microsoft Corporation

svchost.exe 216 Host Process for Windows Services Microsoft Corporation

taskeng.exe 2316 Task Scheduler Engine Microsoft Corporation

taskeng.exe 2688 Task Scheduler Engine Microsoft Corporation

svchost.exe 1000 Host Process for Windows Services Microsoft Corporation

dwm.exe 2272 Desktop Window Manager Microsoft Corporation

WUDFHost.exe 2360 Windows Driver Foundation - User-mode Driver Framework Host Process Microsoft Corporation

SLsvc.exe 300 Microsoft Software Licensing Service Microsoft Corporation

svchost.exe 488 Host Process for Windows Services Microsoft Corporation

svchost.exe 864 Host Process for Windows Services Microsoft Corporation

svchost.exe 1084 Host Process for Windows Services Microsoft Corporation

spoolsv.exe 1292 Spooler SubSystem App Microsoft Corporation

svchost.exe 1316 Host Process for Windows Services Microsoft Corporation

PD91Agent.exe 1872 PD91Agent Module Raxco Software, Inc.

PD91AgentS1.exe 2752 PD91AgentS1 Module Raxco Software, Inc.

PnkBstrA.exe 1056

svchost.exe 1100 Host Process for Windows Services Microsoft Corporation

nvSCPAPISvr.exe 1592 Stereo Vision Control Panel API Server NVIDIA Corporation

svchost.exe 1700 Host Process for Windows Services Microsoft Corporation

svchost.exe 708 Host Process for Windows Services Microsoft Corporation

wmpnetwk.exe 4000 Windows Media Player Network Sharing Service Microsoft Corporation

lsass.exe 648 Local Security Authority Process Microsoft Corporation

lsm.exe 656 Local Session Manager Service Microsoft Corporation

csrss.exe 600 Client Server Runtime Process Microsoft Corporation

winlogon.exe 392 Windows Logon Application Microsoft Corporation

explorer.exe 2584 Windows Explorer Microsoft Corporation

MSASCui.exe 2928 Windows Defender User Interface Microsoft Corporation

RAVCpl64.exe 2968 Realtek HD Audio Manager Realtek Semiconductor

GoogleToolbarNotifier.exe 3020 GoogleToolbarNotifier Google Inc.

ehtray.exe 3036 Media Center Tray Applet Microsoft Corporation

wmpnscfg.exe 3960 Windows Media Player Network Sharing Service Configuration Application Microsoft Corporation

firefox.exe 3468 Firefox Mozilla Corporation

procexp.exe 4744 Sysinternals Process Explorer Sysinternals - www.sysinternals.com

procexp64.exe 4832 0.39 Sysinternals Process Explorer Sysinternals - www.sysinternals.com

uTorrent.exe 4484 µTorrent BitTorrent, Inc.

jusched.exe 3108 Java Platform SE binary Sun Microsystems, Inc.

HijackThis.exe 320 HijackThis Trend Micro Inc.

notepad.exe 4796 Notepad Microsoft Corporation

Process: uTorrent.exe Pid: 4484

Name Description Company Name Version

ADVAPI32.dll Advanced Windows 32 Base API Microsoft Corporation 6.0.6002.18005

CLBCatQ.DLL COM+ Configuration Catalog Microsoft Corporation 2001.12.6931.18000

COMCTL32.dll User Experience Controls Library Microsoft Corporation 6.10.6002.18005

comdlg32.dll Common Dialogs DLL Microsoft Corporation 6.0.6002.18005

dhcpcsvc.DLL DHCP Client Service Microsoft Corporation 6.0.6002.18005

dhcpcsvc6.DLL DHCPv6 Client Microsoft Corporation 6.0.6002.18005

DnsApi.dll DNS Client API DLL Microsoft Corporation 6.0.6002.18005

FirewallAPI.dll Windows Firewall API Microsoft Corporation 6.0.6001.18000

GDI32.dll GDI Client DLL Microsoft Corporation 6.0.6002.18005

IMM32.DLL Multi-User Windows IMM32 API Client DLL Microsoft Corporation 6.0.6002.18005

Iphlpapi.dll IP Helper API Microsoft Corporation 6.0.6002.18005

kernel32.dll Windows NT BASE API Client DLL Microsoft Corporation 6.0.6002.18005

locale.nls

locale.nls

LPK.DLL Language Pack Microsoft Corporation 6.0.6002.18005

MSCTF.dll MSCTF Server DLL Microsoft Corporation 6.0.6002.18005

msctf.dll.mui MSCTF Server DLL Microsoft Corporation 6.0.6000.16386

msvcrt.dll Windows NT CRT DLL Microsoft Corporation 7.0.6002.18005

mswsock.dll Microsoft Windows Sockets 2.0 Service Provider Microsoft Corporation 6.0.6002.18005

napinsp.dll E-mail Naming Shim Provider Microsoft Corporation 6.0.6001.18000

NLAapi.dll Network Location Awareness 2 Microsoft Corporation 6.0.6001.18000

NSI.dll NSI User-mode interface DLL Microsoft Corporation 6.0.6001.18000

ntdll.dll NT Layer DLL Microsoft Corporation 6.0.6002.18005

ntdll.dll NT Layer DLL Microsoft Corporation 6.0.6002.18005

ole32.dll Microsoft OLE for Windows Microsoft Corporation 6.0.6002.18005

oleaut32.dll Microsoft Corporation 6.0.6002.18005

pnrpnsp.dll PNRP Name Space Provider Microsoft Corporation 6.0.6001.18000

PSAPI.DLL Process Status Helper Microsoft Corporation 6.0.6000.16386

R000000000009.clb

rasadhlp.dll Remote Access AutoDial Helper Microsoft Corporation 6.0.6000.16386

RPCRT4.dll Remote Procedure Call Runtime Microsoft Corporation 6.0.6002.18024

rsaenh.dll Microsoft Enhanced Cryptographic Provider Microsoft Corporation 6.0.6002.18005

Secur32.dll Security Support Provider Interface Microsoft Corporation 6.0.6002.18051

SHELL32.dll Windows Shell Common Dll Microsoft Corporation 6.0.6002.18005

shfolder.dll Shell Folder Service Microsoft Corporation 6.0.6000.16386

SHLWAPI.dll Shell Light-weight Utility Library Microsoft Corporation 6.0.6002.18005

USER32.dll Multi-User Windows USER API Client DLL Microsoft Corporation 6.0.6002.18005

USERENV.dll Userenv Microsoft Corporation 6.0.6002.18005

USP10.dll Uniscribe Unicode script processor Microsoft Corporation 1.626.6002.18005

uTorrent.exe µTorrent BitTorrent, Inc. 1.8.4.16442

uxtheme.dll Microsoft UxTheme Library Microsoft Corporation 6.0.6001.18000

VERSION.dll Version Checking and File Installation Libraries Microsoft Corporation 6.0.6002.18005

WINNSI.DLL Network Store Information RPC interface Microsoft Corporation 6.0.6001.18000

winrnr.dll LDAP RnR Provider DLL Microsoft Corporation 6.0.6002.18005

WLDAP32.dll Win32 LDAP API DLL Microsoft Corporation 6.0.6002.18005

wow64.dll Win32 Emulation on NT64 Microsoft Corporation 6.0.6002.18005

wow64cpu.dll AMD64 Wow64 CPU Microsoft Corporation 6.0.6002.18005

wow64win.dll Wow64 Console and Win32 API Logging Microsoft Corporation 6.0.6002.18005

WS2_32.dll Windows Socket 2.0 32-Bit DLL Microsoft Corporation 6.0.6001.18000

wship6.dll Winsock2 Helper DLL (TL/IPv6) Microsoft Corporation 6.0.6001.18000

wshtcpip.dll Winsock2 Helper DLL (TL/IPv4) Microsoft Corporation 6.0.6001.18000

Thanks again for your time.

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I tried something out today. I used BitTornado to try the torrents that were giving me problems and they didn't give me any trouble at all in that client. Never spiked my connection once. Oh well, I'll still use utorrent for most of my torrenting needs as I rarely download any large torrents. I'll just use BitTornado for those odd large ones every once in a while until some kind of remedy is found lol. Anyways, thanks again for taking a look Switeck.

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  • 3 weeks later...

I'm not sure if this will work for you (or even if you're still searching for a solution!), but I was experiencing a very similar error (the zigzag/yoyo). I uninstalled Service Pack 2 for Vista 64bit and the zigzag is gone. As a bonus, I can now get higher than 1 kb/sec on Direct Connect as well. So maybe it'll work for you, too.

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